Diode Laser Radar System Analysis And Design For High Precision Ranging

Michael de La Chapelle; J. Doyle McClure; Edward J. Vertatschitsch; Raymond G. Beausoleil; James G. Bull; John A. McGarvey

doi:10.1117/12.976376

22 June 1989 Diode Laser Radar System Analysis And Design For High Precision Ranging

Michael de La Chapelle, J. Doyle McClure, Edward J. Vertatschitsch, Raymond G. Beausoleil, James G. Bull, John A. McGarvey

Author Affiliations +

Proceedings Volume 1043, Laser Diode Technology and Applications; (1989) https://doi.org/10.1117/12.976376
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

Abstract

Laser radar (ladar) performance parameters such as range accuracy, estimation time and target range are analyzed as a function of the component parameters that comprise the system. Design tradeoffs and performance comparisons are evaluated for two popular ladar system designs: intensity modulated(IM)/direct detection(DD) and frequency modulated(FM)/coherent detection(CD). The comparison includes practical discussions of modulation, signal processing and component performance. The analysis begins by presenting accurate signal to noise ratio (SNR) equations that include the often omitted phase noise and intensity noise terms. Next, the SNR is related to the range accuracy, estimation time and modulation frequency or bandwidth via the Cramer-Rao lower bound (CRLB) for optimal processing. The results of the analysis are used to identify critical component design and performance issues for precision IM/DD and FM/CD ladar systems.

Citation Download Citation

Michael de La Chapelle, J. Doyle McClure, Edward J. Vertatschitsch, Raymond G. Beausoleil, James G. Bull, and John A. McGarvey "Diode Laser Radar System Analysis And Design For High Precision Ranging", Proc. SPIE 1043, Laser Diode Technology and Applications, (22 June 1989); https://doi.org/10.1117/12.976376

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